Multiple centrifugal governor.



A TTOENEX Patented Sept. 9, 1913.

H. A'. WEIDENBAGH.

MULTIPLE GENTRIFUGAL GOVERNOR.

APPLICATION FILED MAY 24, 1911 WITNESSES! I,

6am! My rrnn s'rArEs ra'rnr rron HERMAN A. WEIDENBACH, 0F BUFFALO, NEW YORK.

MULTIPLE CENTRIFUGAL GOVERNOR.

To all whom it may concern:

Be it known that I, HERMAN A. WnroEN- BAGI-I, a citizen of, the United States of America, residing at Bufialo, in the county of Erie and State of- New York, have invented certain new and useful Improvements in Multiple Centrifugal Governors, of which the following is 'a full, clear, and exact description. 1

One of the objects of my invention has been to provide a governor which shall be entirely inclosed withina casing.

Another object hasbeen to provide a governor in which the amount of movement of govern. p lugs 6 near its upper end 1n whichare sethe reciprocating parts shall be multiplied, thus making a very compact device.

Furthermore,-my device is very sensitive to the slightest change of the speed of revolution thereof and may be easily and quickly adjusted to govern at any desired speed.

My governor has few working parts and will not easily getout of order.

I have accomplished these and other advantages, which will be apparent to those skilled in the art, by my device hereinafter described. V

Referenceis to be had to accompanying drawings, which form part of this specification. T In the drawings like characters ofreference indicate like parts in the several views of which Figure 1 is a vertical sectional elevation of my governor and is-taken on the center line thereof. Flg. 2 1s a transverse sectlonal view of the same and 1s taken on line AB of Fig. 1. Fig. 3 is avertical sectional 'elethan those shown in Figs. 1 to 3.

.Referring now to the drawings and more particularly to Figs. 1 and 2,5 is the central shaft of my governor which is designed to be revolved by the engine which it is to The saidshaft is provided with cured two screw-threaded pivot pins 7 and 8. These pivot pins are disposed diametrically opposite each other and have pivotally mounted thereon the casing parts 9 and 10 of my governor, which are eachpreferably formed in the shape of a semi-sphere. Suitable bearings for the casing parts 9 and 1O Specification of Letters Patent.

Patented Septflt), 1913.

Application filed May 24, 1911. Serial No. 629,248.

are provided by means of the integral lugs 28 and 29 respectively. Each of the said casing parts 9 and 10 has a portion of the edge thereof, below the pivot pins 7' and 8 cut away, (as shown by the dotted lines in Fig. 1,) so as to allow a limited movement of these casing parts about the said pivot pins.

Disposed at right angles to the pivot pins 7 and 8, are cars 11 and 12 which are preferably integral with the said central shaft 5. These ears are provided with slots 13 and pivotally mounted in said slots are segmental gears l-i and 15, which are rotatably mo-unted'on pivot pins 80 and 31 respectively. These ears are also provided with apertures 30 and 31*, into which the pivot pins 30and 31, respectively, may be placed so as to accommodate segmental gears, (such for lnstance, as the gears shown in Fig. 4-),

giving'a different multiplying ratio for the governor. The segmental gears 1 1 and 15 are provided with outwardly extending arms 16 and 17 respectively' These arms are disposed in apertures provided in the sides of the casing parts 9 and 10, in which are'preferably fitted hardened steel bushings l8 and 19, respectively. The edges of the arms 16 and 17 are preferably of spherical conformation so that they, not only fit the aperture in each bushing 18 and19 but also have a suitable bearing contact therewith at any angle which they may assume when the governor is in operation.

.The upper end of the central shaft 5 is provided with a concentric aperture 20 which extends down into said shaft and passes by. the slots 13. In this aperture is slidably disposed a. spindle 21, which is provided on oppositesides with gear racks arranged to mesh with the segmental gears 14 and 15. This spindle extends up through the casing parts 9 and 10 and has its motion communicated to the valves or devices which control the flow of motive fluid to the engine or apparatus being governed, in any of the ways well known in the art.

22 and 28 are weights which are disposed above the pivot pins 7 and 8 and which are preferably made integral with the casing parts 9 and 10, respectively. Disposed in the casing parts 9 and 10, below the pivot pins 7 and 8, are screw-threaded studs 24: and 25, respectively, each of which carries one end of the compression spring 26. This spring passes through an aperture 27 in the I required.

central shaft 5 and serves to keep the casing parts normally in the position shown in Fig. 1. The studs 24 and 25 are slotted and the compression of the spring 26 may be altered when it is desired to change the speed of revolution at which the device will j govern.

In the modified form of my invention shown in Fig. 3 32 is the central shaft, which pivotally carries the casing parts 33 and 34 in a manner similar to the form shown in Fig. 1 and hereinbefore described. 35 and 36 are the segmental gears which are pivotally mounted on the pivot pins 37 and 38 respectively. Additional apertures 37 and 38 are also provided to permit gears, (such, for instance, as the gears shown in Fig. 4), giving a different multiplying ratio to be placed in the governor. These segmental gears are provided with outwardly extending arms 39 and 40 which are disposed in the bushings 41 and 42 respectively. Arranged centrally through the upper end of the central shaft 32- is a spindle 43 which is provided on opposite sides with gear racks, engageable with the segmental gears 35 and 36. v

Near the lower side of the casing parts 33 and 34 are provided, bosses 44 and 45, preferably cylindrical and each has a central counter-sunk aperture 46. In each aperture 46 is disposed a compression spring 47. Arod 48 extends through an aperture 49 provided in the central shaft 32 and through each spring 47 and has at each of its outer ends a washer 50 and a nut 57 which are arranged to bear against the outer ends of will operate maybe adjusted and regulated.

The bosses 44 and 45 form the weights .of the governorand may be made as heavy as In this form of governor, the portion of the joint between the casing parts which is below the center or pivotal points, is normally closed and that portion of the said joint which is above the center is cut away somewhat so as to allow of anupward movement of the said casing parts, when the governor is in operation.

Having thus described my invention, I will now describe its operation: When the central shaft 5 of the form of my invention shown in Figs. 1 and 2, is revolved, the weights 22 and 23, because of centrifugal force, tend to separate and as they do so, the casing parts 9 and 10 are revolved about the pivot pins 7 and 8. As the said casing parts revolve, the short outwardly extending arms 16 and 17 are revolved therewith and as these arms are moved downwardly, the segmental gears 14 and 15 to which the stud arms are secured, are

caused to revolve in an upward direction.

When the segmental gears are moved in either direction the spindle 21 iis'given a reciprocating movement, in a direction corresponding to the direction of rotation of the said segmental gears.

It will be seen that the length of the arms 16 and 17 are short as compared to 2'. c. a slight movement of the weights causes a multiplied movement of the spindle,

thereby providing a very compact and sensitive governing device.

Should the motion given to the spindle be greater than desired, the multiplying ratio of the governor may be easily changed by removing the gears 14 and 15 0 35 and 36 (Figs. 1 and. 3, respectively) and substituting therefor a pair of segmental gears, each having a shorter pitch radius and a longer arm extending from the gear than the gears shown in Figs. 1 and 3, as for instance, the gears 52 and Y53 shown in Fig. 4.

The operation of the modified form shown in Fig. 3 is similar to that just de scribed, only when the central shaft thereof is revolved, the casing parts33 and 34 will be revolved in an upwardly direction and 'will draw the spindle 43 downwardly,while in the form shown in Fig. 1 the casing parts 9 and 10 revolve in a'downwardly clirection and move the spindle 21 upwardly.

Obviously any other connecting means than teeth between the outwardly extending arms and the spindles may be employed to produce the same results as produced bythe means shown. Likewise gears having pivotal points, giving a different ratio between the pitch circle of the gear and the arm may be used in place of the one shown in Figs. 1, 2 and '3, so as to produce a change in leverage and thereby alter the multiplying effectof the'leverage action .on the spindle of the governor.

Other modifications than those named may be made without departing from the spirit of my invention, and I do not wish to be limited to the exact construction therein shown and described.

Having thus described my invention, what I claim is: g r V i 1. A governor comprising a shaft, a two part casing centrally pivoted on said shaft weights arranged on the-peripheryof said casing parts, a spindle longitudinally movable within said casing and .said shaft,

levers connecting said spindle with said casing parts and means for pivotally mounting different levershaving different leverages at difi erent points. between said spindle and the outside walls of said'casing parts, whereby the multiplying effect of the leverage action on said spindlemay be altered as de- 1 sired. y

2. A governor comprlsing a shaft, atwo part casing centrally pivoted on said shaft, weights arranged on the periphery of said casing parts, a spindle longitudinally movable within said casing and said shaft, adjustably arranged spring means connecting the parts of said casing, levers connecting said spindle with said casing parts, and means for pivotally mounting different levers having different leverages at different points between said spindle and the outside walls of said casing parts whereby the multiplying effect of the leverage action on said spindle may be altered as desired.

3. In a governor of the combination of a shaft, a two part casing centrally pivoted on said shaft, weigh-ts arranged on the periphery of said casing parts, a spindle provided with racks longitudinally movable within said casing and said shaft, adjustable arranged spring means, connecting the parts of said casing, and lever means connecting said spindle with said casing parts comprising, segmental gears arranged to mesh with the racks on said spindle and pivotally mounted on said shaft within the periphery of said casing parts, and outwardly extending arms secured to said segmental gears and engageable with said casing parts.

4:. In a governor of the combination of a shaft, a two part casing centrally pivoted on said shaft, weights arranged on the periphery of said casing parts, a spindle provided with racks longitudinally movable within said casing and said shaft, adjustably.

arranged spring means connecting theparts of said casing, and lever means connecting said spindle with said casing parts comprising, segmental gears arranged to mesh with the racks on said spindle and pivotally mounted on said shaft at a greater distance from said spindle than from the periphery of said casing parts, and outwardly extending arms secured to said segmental gears and engageable with said casing, whereby the V longitudinal movement of said spindle is multiplied by the movement of said weights.

5. In a governor of the combination of a shaft, oppositely arranged pivot pins carried by said shaft, a two part casing centrally pivoted on said pivot pins, weights arranged on the periphery of said casing parts, a spindle provided with racks and longitudinally movable within said casing and said shaft, ears on said shaft each provided with a slot, segmental gears pivotally carried by said ears in said slots and arranged to mesh with the racks on said spindle, and outwardly extending arms secured to said segmental gears, engageable with said casing parts, said segmental gears being pivoted at a greater distance from said spindle than from the periphery of said casing, whereby the longitudinal movement of said spindle is multiplied by the movement of said weights.

6. In a governor of the combination of a shaft, oppositely arranged pivot pins carried by said shaft, a two part casing centrally pivoted on said pivot pins, weights arranged on the periphery of said casing parts, above said pivot pins, adjustable spring means connecting said casing parts and disposed below said pivot pins, a spindle provided with racks and longitudinally movable within said casing and said shaft, ears on said shaft each provided with a slot, segmental gears pivotally carried by said ears in said slots and arranged to mesh with the racks on said spindle, and outwardly extending arms secured to said segmental gears and engageable with said casing parts, said segmental gears being pivoted at a greater distance from said spindle than from the periphery of said casing, whereby the longitudinal movement of said spindle is multiplied by the movement of the weights.

- In testimony whereof, I have hereunto set my hand in the presence of two witnesses. HERMAN A. WEIDENBACH. \Vitnesses:

J. WM. ELLIS,

WALTER H. KELLEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, 1). C. 

